MUMENG LED Water Faucet Light Colors Changing Glow Shower Stream Tap for Bathroom Kitchen(Adapter included) No batteries, no wire needed. LED light will light up when you turn on the tap. The faucet light will change colors randomly with time. Colors are mixed displayed automatically when water flow with deferent temperature Easy to Install. This LED water faucet fits on most taps The lights are bright enough so there is no need for other lighting sources.